20489341700 has 18 divisors (see below), whose sum is σ = 44461871706. Its totient is φ = 8195736640.

The previous prime is 20489341693. The next prime is 20489341711. The reversal of 20489341700 is 714398402.

It can be written as a sum of positive squares in 3 ways, for example, as 127193284 + 20362148416 = 11278^2 + 142696^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 102446609 + ... + 102446808.

Almost surely, 2^20489341700 is an apocalyptic number.

20489341700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20489341700 is an abundant number, since it is smaller than the sum of its proper divisors (23972530006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20489341700 is a wasteful number, since it uses less digits than its factorization.

20489341700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204893431 (or 204893424 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 20489341700 in words is "twenty billion, four hundred eighty-nine million, three hundred forty-one thousand, seven hundred".